In the Rutherford model of the atom, the atom consists of a central mass (the nucleus) orbited by much smaller particles (the electrons).
Which of the following correctly describes the electric charges of the central mass and the orbiting particles?
Central mass: negative; orbiting particles: positive
Central mass: negative; orbiting particles: neutral
Central mass: positive; orbiting particles: negative
Central mass: positive; orbiting particles: neutral
284 exam-style questions on CIE IGCSE Physics 5.1 The nuclear model of the atom, covering 5.1.1a Structure of the atom and ions, 5.1.1b Alpha-particle scattering, 5.1.2a Composition of the nucleus and isotopes, 5.1.2b Proton number, nucleon number and nuclide notation, and 5.1.2c Nuclear fission and nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.